EPA has consistently interpreted the Section 307(b) requirement that removal credits not prevent the use or disposal
of sludge to mean that whatever use or disposal the POTWs make of their sludge, they must
comply with all applicable federal, state, and local requirements, not just whatever guidelines EPA may have explicitly
promulgated under Section 405(d). See 43 Fed. Reg. 27749 (1978); 40 C.F.R.403.7(a)(3)(iv).
What this means is that treatment plants can not issue removal credits if sludge is disposed of in a part 503
Surface Disposal (SD) site.
Appendix G to Part 403—Pollutants Eligible for a Removal Credit
top
I. Regulated Pollutants in Part 503 Eligible for a Removal Credit
------------------------------------------------------------------------
Use or disposal practice
Pollutants -----------------------------------------
LA SD 0-25 meters I Hazardous
-------------------------------------------------------------------boundary line----- level
Arsenic....................... X 75ppm X 30ppm X 5 ppm
Beryllium..................... ..... ....... ........... . X
Cadmium...................... X 85ppm ........ .... X 1 ppm
Chromium...................... ...<3,000ppm. X 200ppm X 5 ppm
Copper........................ X 4,300ppm
Lead.......................... X 840ppm ........... X 5 ppm
Mercury....................... X 57ppm . ......... .. X 0.2 ppm
Molybdenum................ X 75ppm
Nickel........................ X 420ppm X 420ppm X
Selenium...................... X 100ppm 1 ppm
Zinc......................... X 7,000ppm
Total hydrocarbons......... ............ ............ X \1\
------------------------------------------------------------------------
http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?
c=ecfr&sid=401d1fa5a85e820674e669b8a3edf23b&rgn=div5&view=text&node=40:28.0.1.1.4&idno=40#40:
28.0.1.1.4.0.1.7
75
3,000 (1)
75